Jonah Hill – star of Superbad, 21 Jump Street and Moneyball – has always wanted to work with Martin Scorsese. Now he's got his wish. He talks to Hermione Hoby about losing weight, giving up comedy and making Leonardo DiCaprio sick

Australian actor Margot Robbie is about to hit the big time, starring in the new Richard Curtis romcom. But it's her next role, opposite Leonardo DiCaprio and directed by Martin Scorsese, that seems to have really got her excited

James Toback and Alec Baldwin press the flesh with financiers, journos and A-listers such as Martin Scorsese and Ryan Gosling in this endlessly revealing guilty-pleasure documentary shot at Cannes last year

Hollywood and the world's most prestigious film festival, Cannes, have conducted an on-off romance down the years – and now they're closer than ever. But have they got too cosy? As the Croisette opens for business, Xan Brooks investigates